U.S. Army Sgt David Echeverry, Black Team Demonstrator, U.S. Army Parachute Team The Golden Knights, flies the POW MIA flag into Charlotte Motor Speedway during the opening ceremonies of the USO North Carolina Vietnam Veterans Homecoming Celebration, March 31, 2012. The USO of North Carolina and Charlotte Motor Speedway, with support from the North Carolina Association of Broadcasters, honored the service of Vietnam veterans with a special welcome home event at the Charlotte Motor Speedway. (US Army Photo by Jerry Morrison)(RELEASED)